<template>
  <Dialog :title="dialogTitle" v-model="dialogVisible">
    <el-form
      ref="formRef"
      :model="formData"
      :rules="formRules"
      label-width="100px"
      v-loading="formLoading"
    >
      <el-form-item label="上级节点" prop="parentId">
        <el-tree-select
          v-model="formData.parentId"
          :data="nodeTree"
          :default-expanded-keys="[0]"
          :props="defaultProps"
          check-strictly
          node-key="id"
          placeholder="请选择上级节点"
        />
      </el-form-item>
      <el-form-item label="标题" prop="name">
        <el-input v-model="formData.name" placeholder="请输入标题" />
      </el-form-item>
      <el-form-item label="描述" prop="description">
        <el-input
          v-model="formData.description"
          type="textarea"
          placeholder="请输入描述"
          rows="3"
        />
      </el-form-item>
      <el-form-item label="关键特征" prop="keyFeatures">
        <el-input-tag v-model="formData.keyFeatures" placeholder="请输入关键特征" :max="10" />
      </el-form-item>
      <el-form-item label="标签" prop="tags">
        <el-input-tag v-model="formData.tags" placeholder="请输入标签" :max="10" />
      </el-form-item>

      <el-form-item v-if="formType === 'update'" label="状态" prop="status">
        <el-radio-group v-model="formData.status">
          <el-radio
            v-for="dict in getIntDictOptions(DICT_TYPE.COMMON_STATUS)"
            :key="dict.value"
            :label="dict.value"
          >
            {{ dict.label }}
          </el-radio>
        </el-radio-group>
      </el-form-item>
    </el-form>
    <template #footer>
      <el-button @click="submitForm" type="primary" :disabled="formLoading">确 定</el-button>
      <el-button @click="dialogVisible = false">取 消</el-button>
    </template>
  </Dialog>
</template>
<script setup lang="ts">
import { getIntDictOptions, DICT_TYPE } from '@/utils/dict'
import { KnowledgeNodeApi, KnowledgeNode } from '@/api/school/knowledge/node'
import { defaultProps, handleTree } from '@/utils/tree'

/** 节点管理 表单 */
defineOptions({ name: 'KnowledgeNodeForm' })

const { t } = useI18n() // 国际化
const message = useMessage() // 消息弹窗

const dialogVisible = ref(false) // 弹窗的是否展示
const dialogTitle = ref('') // 弹窗的标题
const formLoading = ref(false) // 表单的加载中：1）修改时的数据加载；2）提交的按钮禁用
const formType = ref('') // 表单的类型：create - 新增；update - 修改
const formData: any = ref({
  id: undefined,
  knowledgeId: 0,
  parentId: undefined,
  name: undefined,
  description: undefined,
  keyFeatures: undefined,
  tags: undefined,
  sort: undefined,
  status: 0
})
//查询节点树时，需要传入的参数
const queryData = {
  knowledgeId: 0,
  status: 0
}
const formRules = reactive({
  parentId: [{ required: true, message: '上级节点不能为空', trigger: 'blur' }],
  name: [{ required: true, message: '标题不能为空', trigger: 'blur' }],
  description: [{ required: true, message: '描述不能为空', trigger: 'blur' }],
  status: [{ required: true, message: '状态不能为空', trigger: 'blur' }]
})
const formRef = ref() // 表单 Ref

/** 打开弹窗 */
const open = async (type: string, id?: number, parentId?: number, knowledgeId?: number) => {
  dialogVisible.value = true
  dialogTitle.value = t('action.' + type)
  formType.value = type
  resetForm()

  //赋值知识库id
  if (knowledgeId) {
    formData.value.knowledgeId = knowledgeId
    queryData.knowledgeId = knowledgeId
  }

  if (parentId) {
    formData.value.parentId = parentId
  }

  // 修改时，设置数据
  if (id) {
    formLoading.value = true
    try {
      formData.value = await KnowledgeNodeApi.getKnowledgeNode(id)
      formData.value.keyFeatures = formData.value.keyFeatures
        ? formData.value.keyFeatures?.split(',')
        : []
      formData.value.tags = formData.value.tags ? formData.value.tags?.split(',') : []
    } finally {
      formLoading.value = false
    }
  }

  //查询节点树
  await getNodeTree(queryData)
}
defineExpose({ open }) // 提供 open 方法，用于打开弹窗

/** 提交表单 */
const emit = defineEmits(['success']) // 定义 success 事件，用于操作成功后的回调
const submitForm = async () => {
  // 校验表单
  await formRef.value.validate()
  // 提交请求
  formLoading.value = true
  try {
    const data: any = { ...(formData.value as unknown as KnowledgeNode) }
    data.keyFeatures = data?.keyFeatures?.length ? data.keyFeatures?.join(',') : ''
    data.tags = data?.tags?.length ? data.tags?.join(',') : ''
    if (formType.value === 'create') {
      await KnowledgeNodeApi.createKnowledgeNode(data)
      message.success(t('common.createSuccess'))
    } else {
      await KnowledgeNodeApi.updateKnowledgeNode(data)
      message.success(t('common.updateSuccess'))
    }
    dialogVisible.value = false
    // 发送操作成功的事件
    emit('success')
  } finally {
    formLoading.value = false
  }
}

/** 重置表单 */
const resetForm = () => {
  formData.value = {
    id: undefined,
    knowledgeId: 0,
    parentId: undefined,
    name: undefined,
    description: undefined,
    keyFeatures: undefined,
    tags: undefined,
    sort: undefined,
    status: 0
  }
  formRef.value?.resetFields()
}

/** 获得节点树 */
const nodeTree = ref<Tree[]>([]) // 树形结构
const getNodeTree = async (queryData) => {
  nodeTree.value = []
  const data = await KnowledgeNodeApi.getSimpleNodeList(queryData)
  const root: Tree = { id: 0, name: '顶级节点', children: [] }
  root.children = handleTree(data, 'id', 'parentId')
  nodeTree.value.push(root)
}
</script>
